A coupled dynamic cohesive zone model for FRP-concrete mixed-mode separation
Cohesive zone models (CZMs) have been used to model composite fracture, metal adhesion failure, concrete cracking and other fracture scenarios. In these applications, CZMs are broadly classified into uncoupled models for pure mode fracture and coupled models incorporating mode I and mode II characte...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/160086 |
| _version_ | 1826124390964658176 |
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| author | Li, Gen Tan, Kang Hai Fung, Tat Ching Yu, Qing Jun May, Michael |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Li, Gen Tan, Kang Hai Fung, Tat Ching Yu, Qing Jun May, Michael |
| author_sort | Li, Gen |
| collection | NTU |
| description | Cohesive zone models (CZMs) have been used to model composite fracture, metal adhesion failure, concrete cracking and other fracture scenarios. In these applications, CZMs are broadly classified into uncoupled models for pure mode fracture and coupled models incorporating mode I and mode II characteristics for mixed-mode fracture. Various coupled dynamic CZMs have been provided for dynamic fracture problems. However, a coupled CZM for FRP-concrete bond interface is still lacking. Such a bond interface contains diverse traction-separation performance in mode I and mode II fracture, as well as dynamic enhancing effect. To bridge this gap, current study proposed a coupled dynamic CZM to analyse FRP-concrete mixed-mode separation. The main objective was to evaluate model response under various mixed-mode ratios, including stress-separation curves and energy dissipation. The model was validated by various FRP-concrete dynamic separation tests, e.g. single-lap shear tests, three-point bending tests and FRP strengthened reinforced concrete (RC) beam subjected to a dynamic loading. Subsequently, the model was applied in finite element analysis (FEA) of an FRP strengthened RC wall under blast scenarios. From the comparison with the test results, the model was shown to be reliable and accurate in simulating the behaviour of FRP-concrete mixed-mode separation. |
| first_indexed | 2024-10-01T06:19:53Z |
| format | Journal Article |
| id | ntu-10356/160086 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:19:53Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1600862022-07-12T08:01:54Z A coupled dynamic cohesive zone model for FRP-concrete mixed-mode separation Li, Gen Tan, Kang Hai Fung, Tat Ching Yu, Qing Jun May, Michael School of Civil and Environmental Engineering Engineering::Civil engineering Cohesive Zone Model FRP‐Concrete Debonding Cohesive zone models (CZMs) have been used to model composite fracture, metal adhesion failure, concrete cracking and other fracture scenarios. In these applications, CZMs are broadly classified into uncoupled models for pure mode fracture and coupled models incorporating mode I and mode II characteristics for mixed-mode fracture. Various coupled dynamic CZMs have been provided for dynamic fracture problems. However, a coupled CZM for FRP-concrete bond interface is still lacking. Such a bond interface contains diverse traction-separation performance in mode I and mode II fracture, as well as dynamic enhancing effect. To bridge this gap, current study proposed a coupled dynamic CZM to analyse FRP-concrete mixed-mode separation. The main objective was to evaluate model response under various mixed-mode ratios, including stress-separation curves and energy dissipation. The model was validated by various FRP-concrete dynamic separation tests, e.g. single-lap shear tests, three-point bending tests and FRP strengthened reinforced concrete (RC) beam subjected to a dynamic loading. Subsequently, the model was applied in finite element analysis (FEA) of an FRP strengthened RC wall under blast scenarios. From the comparison with the test results, the model was shown to be reliable and accurate in simulating the behaviour of FRP-concrete mixed-mode separation. Defence Medical Research Institute, DSTA Nanyang Technological University The authors acknowledge the research scholarship given by Nanyang Technological University and the research grant of the project “Modelling of Fibre‐Reinforced Polymer (FRP) Strengthened Reinforced Concrete Walls subject to Blast and Fragment Loadings” from the Defence Science and Technology Agency (DSTA), Singapore. 2022-07-12T08:01:54Z 2022-07-12T08:01:54Z 2021 Journal Article Li, G., Tan, K. H., Fung, T. C., Yu, Q. J. & May, M. (2021). A coupled dynamic cohesive zone model for FRP-concrete mixed-mode separation. Composite Structures, 268, 113872-. https://dx.doi.org/10.1016/j.compstruct.2021.113872 0263-8223 https://hdl.handle.net/10356/160086 10.1016/j.compstruct.2021.113872 2-s2.0-85104302454 268 113872 en Composite Structures © 2021 Published by Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Civil engineering Cohesive Zone Model FRP‐Concrete Debonding Li, Gen Tan, Kang Hai Fung, Tat Ching Yu, Qing Jun May, Michael A coupled dynamic cohesive zone model for FRP-concrete mixed-mode separation |
| title | A coupled dynamic cohesive zone model for FRP-concrete mixed-mode separation |
| title_full | A coupled dynamic cohesive zone model for FRP-concrete mixed-mode separation |
| title_fullStr | A coupled dynamic cohesive zone model for FRP-concrete mixed-mode separation |
| title_full_unstemmed | A coupled dynamic cohesive zone model for FRP-concrete mixed-mode separation |
| title_short | A coupled dynamic cohesive zone model for FRP-concrete mixed-mode separation |
| title_sort | coupled dynamic cohesive zone model for frp concrete mixed mode separation |
| topic | Engineering::Civil engineering Cohesive Zone Model FRP‐Concrete Debonding |
| url | https://hdl.handle.net/10356/160086 |
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